Date::Manip::TZdata man page on Oracle

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Date::Manip::TZdata(3)User Contributed Perl DocumentatioDate::Manip::TZdata(3)

       Date::Manip::TZdata -- Internal module for working with the tzdata

	  use Date::Manip::TZdata;

	  $tzd	= new Date::Manip::TZdata($dir);

       This module is not intended for public use. It is used internally by
       the scripts used to analyze the time zone database and generate the
       modules for each time zone. The module is included in the distribution
       solely for the sake of completeness. Currently, no support is offered
       for this module, and it can (and may) change without notice.

       This module consists of routines for working with the tzdata files
       obtained from . These files are updated several
       times a year and are the basis for time zone descriptions for most
       computer systems.

	      use Date::Manip::TZdata;

	      $tzd  = new Date::Manip::TZdata($dir);

	   This finds and reads in all the tzdata. If $dir is passed in, it is
	   the directory where a tzdata directory is located. It defaults to
	   the current directory.

       Some assumptions and limitations are assumed in the logic of this

       When a time change occurs, the time may change backwards or forwards.
       Time changes rules are listed on a per-year basis.  It is assumed that
       time changes will not occur so close to the end or start of the year as
       to cross the year boundary (in other words, the year will not change as
       a result of the time change).  This is not accounted for, and it is
       hoped that this situation will never occur.

       Also, because this module is strictly limited to 4 digit positive years
       (regardless of whether it is wallclock or universal time), and because
       various parts of the module switch back and forth, valid times for this
       module are from Jan 2, 0001 to Dec 30, 9999. This ensures that
       conversions from wallclock to universal or vice versa will never make
       dates occur in the year 0000 or 10000.

       None known.

       Please refer to the Date::Manip man page for information on submitting
       bug reports or questions to the author.

       Sullivan Beck (

perl v5.16.3			  2014-04-30		Date::Manip::TZdata(3)

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